Poor Fuel Economy 03' 5.3L
#52
SyTy Speed Shop
iTrader: (6)
on my 2003 5.3L ext cab it has just over 72K miles, only mods are 07 efans and bigger rad and a dynomax ultraflow muffler and on average i only get 15 MPG, now this past weekend over new years, i filled it up and drove to dallas and back to huntsville, 426 miiles and then to my place in humble and around town alittle and when i filled it up again before the low fuel light came on i had 507 miles amd it took 24.1 gallons to fill it up, and that was 21 MPG, best i have ever got and i had the a/c off got most of the trip. Wish i could get that kind of MPG more often.
#53
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well while i have run mixed fuel before, it was out of state. since then ive changes the fuel filter twice. also none of the gas pumps i use show the tag stating its mixed fuel.
#54
no pumps in mn show that the fuel is mixed. there are only very few that say it is not mixed. it seems it has become the standard to mix and i believe Louisiana mixes since 1990 like most others.
#55
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Hey guys wanted to let you know that i will be filling up tomorrow and pulling a car to Grand Prarie, TX. Probably set the cruise at 75 and see what mileage it gets. Car is 97' camaro v6, no engine half an interior, but Ill have a 6.0 truck motor in the bed. Just dropping that off and running back empty trailer.
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